以廉价易得的方酸为原料,通过酯化,再与L-脯氨醇发生氨解反应,得到具有C2对称结构的手性L-脯氨醇方酰胺(分子式:C14H20N2O4),两步反应总收率67.5%.其结构经FT-IR、1 H NMR、13 C NMR、ESI-HRMS以及X-射线单晶衍射进行确证.该晶体属于斜...以廉价易得的方酸为原料,通过酯化,再与L-脯氨醇发生氨解反应,得到具有C2对称结构的手性L-脯氨醇方酰胺(分子式:C14H20N2O4),两步反应总收率67.5%.其结构经FT-IR、1 H NMR、13 C NMR、ESI-HRMS以及X-射线单晶衍射进行确证.该晶体属于斜方晶系,P212121空间群,晶胞参数:a=0.807 04(12)nm,b=0.901 36(13)nm,c=2.059 6(3)nm,α=β=γ=90.00°,V=1.498 2(4)nm3,Z=4,Dc=1.323g·cm-3,μ=0.100 mm-1,F(000)=640,最终残差因子R1=0.042 9,wR2=0.103 9.展开更多
介绍了C2(Command and Control)组织和C2组织结构,讨论了C2组织结构的鲁棒性设计问题。提出了基于粒度计算的鲁棒性组织结构设计方法,设计过程包括两个阶段:平台集粒化阶段和决策分层阶段,并给出了基于遗传算法的平台集粒化方法和鲁棒...介绍了C2(Command and Control)组织和C2组织结构,讨论了C2组织结构的鲁棒性设计问题。提出了基于粒度计算的鲁棒性组织结构设计方法,设计过程包括两个阶段:平台集粒化阶段和决策分层阶段,并给出了基于遗传算法的平台集粒化方法和鲁棒性组织结构的决策树优化模型。案例分析和对比试验表明方法具有较好的性能。展开更多
指挥控制(Command and Control,C2)组织的通信结构设计是解决网络中心战条件下指控信息高效交互的核心问题。围绕C2组织通信结构的延时、可靠性及成本进行建模,在虚拟全连通网络中采用路由随机搜索的方法避免路由及拓扑的局部搜索,并基...指挥控制(Command and Control,C2)组织的通信结构设计是解决网络中心战条件下指控信息高效交互的核心问题。围绕C2组织通信结构的延时、可靠性及成本进行建模,在虚拟全连通网络中采用路由随机搜索的方法避免路由及拓扑的局部搜索,并基于遗传算进行全局搜索求解。实验分析表明该方法可以实现优化目标和效果。展开更多
信息时代网络赋能指挥控制(network enabled command and control,NEC2)的理念,是通过使联网作战兵力信息共享效益最大化,达到作战效能的最大化.通过分析NEC2信息布局应具有的属性要求,提出一种可实现的层次模式联合兵力指挥控制(comman...信息时代网络赋能指挥控制(network enabled command and control,NEC2)的理念,是通过使联网作战兵力信息共享效益最大化,达到作战效能的最大化.通过分析NEC2信息布局应具有的属性要求,提出一种可实现的层次模式联合兵力指挥控制(command and control,C2)连通结构,对其自适应C2特性进行分析,最后结合层次模式指挥控制连通结构信息交换示例,对信息标准交换和按需交换进行介绍,并论述了该连通结构的特性、优点和技术要求.展开更多
In this paper, several dicalcium silicates (β-C2S) obtained from impurities have been studied. A study of the structure and properties of these doped dicalcium silicates reveals that the doping with MgO of BaSO4 enha...In this paper, several dicalcium silicates (β-C2S) obtained from impurities have been studied. A study of the structure and properties of these doped dicalcium silicates reveals that the doping with MgO of BaSO4 enhanced their activity and rate of hydration, K2O has a similar effect rough less pronounced.The lattice distortion and crystal size in β-dicalcium silicates are measured by X-ray powder diffraction technique, the binding energies of 2P3 for Ca and 2P for Si are obtained by X-ray photoelectric spectrum, the vibrations of the chemical bonds in silicate anion 〔SiO4〕4- are examined by FT-IR and Laser Raman spectra and the heat evolution during hydration reaction for β-dicalcium silicates are determined by microcalorimetry. From the results of XRD, XPS, FT-IR, Raman and micro- DSC, the relationship between the microstructure and properties of doped dicalcium silicates and the mechanism of activation due to impurities are discussed. It is pointed out that the essential factors causing the enhancement of activity and acceleration of hydration reaction are the lattice distortion, crystal size,intercrystalline imperfections, the crystallochemical environment change and chemical shifts of the electron binding energies of Ca and Si atoms in doped β-dicalcium silicates.展开更多
军事指挥控制(command and control,C2)组织中的效能评估问题是信息化作战中研究的热点。首先通过分析C2组织实体间的关系,形式化描述了C2组织信息结构的基本概念。分别从作战使命层次和作战任务层次设计了指控效率、同步效率和负载率...军事指挥控制(command and control,C2)组织中的效能评估问题是信息化作战中研究的热点。首先通过分析C2组织实体间的关系,形式化描述了C2组织信息结构的基本概念。分别从作战使命层次和作战任务层次设计了指控效率、同步效率和负载率作为其效能测度指标。然后从结构高效性和鲁棒性的角度探讨了测度指标的选择对衡量C2组织信息结构效能的影响。最后,基于加权积模型提出了一种C2组织信息结构效能综合评估方法,并通过一个案例证明了该方法的有效性和稳定性。展开更多
文摘介绍了C2(Command and Control)组织和C2组织结构,讨论了C2组织结构的鲁棒性设计问题。提出了基于粒度计算的鲁棒性组织结构设计方法,设计过程包括两个阶段:平台集粒化阶段和决策分层阶段,并给出了基于遗传算法的平台集粒化方法和鲁棒性组织结构的决策树优化模型。案例分析和对比试验表明方法具有较好的性能。
文摘指挥控制(Command and Control,C2)组织的通信结构设计是解决网络中心战条件下指控信息高效交互的核心问题。围绕C2组织通信结构的延时、可靠性及成本进行建模,在虚拟全连通网络中采用路由随机搜索的方法避免路由及拓扑的局部搜索,并基于遗传算进行全局搜索求解。实验分析表明该方法可以实现优化目标和效果。
文摘信息时代网络赋能指挥控制(network enabled command and control,NEC2)的理念,是通过使联网作战兵力信息共享效益最大化,达到作战效能的最大化.通过分析NEC2信息布局应具有的属性要求,提出一种可实现的层次模式联合兵力指挥控制(command and control,C2)连通结构,对其自适应C2特性进行分析,最后结合层次模式指挥控制连通结构信息交换示例,对信息标准交换和按需交换进行介绍,并论述了该连通结构的特性、优点和技术要求.
文摘In this paper, several dicalcium silicates (β-C2S) obtained from impurities have been studied. A study of the structure and properties of these doped dicalcium silicates reveals that the doping with MgO of BaSO4 enhanced their activity and rate of hydration, K2O has a similar effect rough less pronounced.The lattice distortion and crystal size in β-dicalcium silicates are measured by X-ray powder diffraction technique, the binding energies of 2P3 for Ca and 2P for Si are obtained by X-ray photoelectric spectrum, the vibrations of the chemical bonds in silicate anion 〔SiO4〕4- are examined by FT-IR and Laser Raman spectra and the heat evolution during hydration reaction for β-dicalcium silicates are determined by microcalorimetry. From the results of XRD, XPS, FT-IR, Raman and micro- DSC, the relationship between the microstructure and properties of doped dicalcium silicates and the mechanism of activation due to impurities are discussed. It is pointed out that the essential factors causing the enhancement of activity and acceleration of hydration reaction are the lattice distortion, crystal size,intercrystalline imperfections, the crystallochemical environment change and chemical shifts of the electron binding energies of Ca and Si atoms in doped β-dicalcium silicates.
文摘军事指挥控制(command and control,C2)组织中的效能评估问题是信息化作战中研究的热点。首先通过分析C2组织实体间的关系,形式化描述了C2组织信息结构的基本概念。分别从作战使命层次和作战任务层次设计了指控效率、同步效率和负载率作为其效能测度指标。然后从结构高效性和鲁棒性的角度探讨了测度指标的选择对衡量C2组织信息结构效能的影响。最后,基于加权积模型提出了一种C2组织信息结构效能综合评估方法,并通过一个案例证明了该方法的有效性和稳定性。
